Brake



L.. E. LA BRIE 2,124,786

July 26, 1938.

BRAKE Original Filed Sept. l2, 1935 IN V EN TOR.

A TToRNEYs.

Patented July 26, 1938 UNITED STATES PATENT OFFICE 5.1mm BRAKE original 13pm-aum semi. iz, 193s, semi No. 40,291. eember 2l, 1937.

Patent No. 2,102,852, dated De- Divided and this application May 5, 1937, Serial N0. 140.898

2 Claims.

Ihis invention relates to brakes, and is illustrated as embodied in internal expanding automobile brakes of the shiitable anchorage type.

An object of the invention is to provide novel and improved positioning means for the brake shoes or their equivalents. This means is intended to be carried by the backing plate of the brake, and preferably includes centering springs acting on a laterally projecting part carried by the shoes, and which is shown as part of an adjustment connecting the shoes.

Other objects and features, including various novel combinations of parts and desirable particular constructions, will be apparent from the following description of the illustrative embodiments shown in the accompanying drawing, in which:

Figure 1 is a partial vertical section through the brake, just inside the head of the brake drum, with the brake shoes shown in side elevation:

Figure 2 is a partial section on the line 2-2 of Figure 1, showing an eccentric stop for one oi' the shoes;

Figure 3 is a partial section on the line 2-2 of Figure l, showing the adjusting and centering means;

Figure 4 is a. partial section through said means on the line 4-4 of Figure l; and

Figure 5 is a section showing an alternative form of stop for the shoe.

The brake shown in Figure 1 includes a rotatable pressed drum 20 (or the lined drum 2| shown in section in Figure 4, and`described and claimed `in my Patent No. 2,507,725, granted October 20, 1936) at the open side of which is arranged a support such as a stamped steel backing plate 22, and within which is arranged the friction means of the brake. The illustrated friction means includes a pair or floating shoes 2li and 2l of T section, each having a central stiiening web and a cylindrical outer rim faced with brake lining.

The brake is applied by means, and has an anchorage, shown and claimed in my Patent No. 2,044,990, granted June 23, 1936, of which my application No. 40,291 was a partial continuation. The present application is a division of said application No. 40,291.

In the brake illustrated, the shoes have at their lower ends sockets |00 formed by registering grooves in stamplngs IIB spotwelded or otherwise secured to the webs of the shoes. Stampings ||0 also ca rry transverse pivots ||2 having central threaded openings adjustably receiving oppositely-extending right-and-leit threaded stems formed on an adjusting member III.

(Ul. lll-79.5)

Member ||l is shown centrally formed with a worm wheel ||0 meshing with and driven by a worm-formed on a cross shaft IIB, iioating with the above-described adjustable joint, and the end of which extends outside the backing plate and is there formed to be grasped by a wrench. Shaft Ill is journaled in two end plates |20, slotted to be mounted on the reduced-diameter ends of the pivots ||2 and held by a clamp bolt |22 (Figure 4) and spacer sleeve |24 mounted thereon between the end plates.

Shaft lll is yieldingly held in place by a spring |20, contlned between the outer end plate |20 and a snap-ring in the end oi the shaft, the spring urging the shaft upwardly in Figure 4 until a snap-ring |20 carried by the shaft engages the second end plate |20. 'I'he shaft IIB also carries a washer |30 covering an enlarged opening in the backing plate through which the shaft projects.

The end plates |20 are also formed with openings recelving lugs formed on two washers |32 mounted on the adjusting member ||4 on opposite sides of the worm wheel IIG. Two lugs on these washers project some distance through the end plate, toward the backing plate 22, and form part of a novel spring centering device. These lugs |22 project between, and are engaged by enlarged collars |32 on the ends of. stems or plungers III slidably mounted in guide sleeves |36.

Sleeves |30 are fixed in oppositely-facing sockets formed in a stamping |30 bolted or otherwise flxedly mounted on the backing plate. Plungers I are encircled by coil springs |40 confined between the collars on the adjacent ends of the plungers, and the bases ofthe sockets in the stamping lll. Springs |40 are compressed sufficiently so that, whenever the brake is released, they will act through plungers |34 on the lugs |32 to center the shoes.

Shoe 20 is shown positioned in part by a webengaging extension 'l2 on an eccentric lll adjustable from outside the backing plate locked by nut Il and carrying a rim-engaging roller 18. Alternatively the shoe rim could be engaged by the end of a right-angle stop 00 (Figure 5) adjustably clamped in a slot l2 by means such as a nut B6.

While one illustrative embodiment has been described in detail, it is not my intention to limit the scope of my invention to that particular embodiment, or otherwise than by the terms of the appended claims.

I claim:

i. A brake comprising friction members having an adjustable connection therebetween, spaced washers having laterally-projecting parts form- GERTIFIGATE Patent Np. 2,12157'86.

LUDGER E.

ensues ward each other. luide sleeves iixed in the outer ends ot ssid sockets. plungers slidsbly arranged in the sleeves snd formed with collars et their mijnV cent ends, and coil springs sleeved on the plungers and sleeves and coniined between the collars and 5 the outer ends of the sockets.

LUDGER E. LA BRIE.

0F CORRECTION.

July 26, 1958.

IA BRIE.

It is hereby certified that error appears in the printed specification of the above numbered potent requiring correction es follows: Page 1 first column, line 5h, for the patent number "2,507,725" reed 2,05'h725; ondthst the said Lettere Patent should be rend with this correction therein that the same muy conform tothe record of the cese in the Patent Office.

Signed end sealed this 15th dey of August, A. D. 1959.

(Seal) Leslie Frazer Acting Oomissioner of Patents.

GERTIFIGATE Patent Np. 2,12157'86.

LUDGER E.

ensues ward each other. luide sleeves iixed in the outer ends ot ssid sockets. plungers slidsbly arranged in the sleeves snd formed with collars et their mijnV cent ends, and coil springs sleeved on the plungers and sleeves and coniined between the collars and 5 the outer ends of the sockets.

LUDGER E. LA BRIE.

0F CORRECTION.

July 26, 1958.

IA BRIE.

It is hereby certified that error appears in the printed specification of the above numbered potent requiring correction es follows: Page 1 first column, line 5h, for the patent number "2,507,725" reed 2,05'h725; ondthst the said Lettere Patent should be rend with this correction therein that the same muy conform tothe record of the cese in the Patent Office.

Signed end sealed this 15th dey of August, A. D. 1959.

(Seal) Leslie Frazer Acting Oomissioner of Patents. 

